Question # 1

In case of point source of light, shape of wavefront is

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Spherical

Cylindrical

Plane

None of above

In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes

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Bright

Dark

Any of A or B

None of these

Monochromatic light means wave of

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Same frequency

Same colour

Same Wavelength

All of them

Which one of the followings can act approximately as a source of monochromatic light

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Neon lamp

Fluorescent tube

Sodium lamp

None of these

Speed of light in vacuum depends upon

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Frequency

Wavelength

Amplitude

None of these

Angle between ray of light and the corresponding wavefront is

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0⁰

60⁰

90⁰

120⁰

When the source of light is at very large distance, the shape of wavefront is

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Spherical

Cylindrical

Plane

None of these

The wave nature of light was proposed by

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Newton

Thomas Young

Huygen

None of these

Huygen principle is used to determine

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Speed of light

Location of wavefront

About polarized and unpolarized light

None of them

The appearance of colours in the soap (or oil) film results from

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Dispersion

Interference

Reflection

Refraction

Electromagnetic waves transport

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Energy only

Momentum only

Both A and B

None is correct

The terms phase difference and path difference are

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Same

Different

Equal

none of these

The property of light which does not change with the nature of the medium is

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Frequency

Amplitude

Wavelength

None of these

Light has

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Wave nature

Dual nature

Particle nature

None of them

To observe interference of light, the condition, which must be met with is that the sources must be

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Monochromatic

Phase coherent

Both of above

None of above

Light waves are

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Mechanical waves

Electromagnetic waves

Any of above

None of above

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